Simple Temperature Measurement Circuit of Thermistor

Published:2011/7/9 21:58:00 Author:Michel | Keyword: Thermistor, Temperature Measurement Circuit | From:SeekIC

This picture is a simple temperature measurement circuit composed of thermistor.In the circuit,VT1 is self-biased constant current source circuit and it provides constant current for thermistors RT. The measured temperature is standed for 500μA and measuring temperature rage is 0一5O℃.Measuring method:2.538kΩ ordinary resistance substitutes for RT and RP1 is adjusted to make the header instruction become largest and RP2 is regulated to make the header instruction become zero.Then 0.4422 k Ω ordinary resistance substitutes for RT and RP1 is regulated to make the header instruction become full scale.Please adjust it again and again until we get the satisfying value.



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